Structure DAPTRASIL00000C · Comanche County, OK

Elgin Road over East Cache Creek

Carries Elgin Road over East Cache Creek, Fort Sill Army Post.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT143 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

143 ft end to end, longest span 71 ft. Lengths and the semi-truck on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a multi-beam bridge.

Built200521 years old
Length143.0 ft43.6 m
Daily traffic400counted 2024
Last inspectedJuly 2024every 24 months

Location

StateOklahoma
CountyComanche
LocationFort Sill Army Post
CarriesElgin Road
CrossesEast Cache Creek
Coordinates34.68729, -98.38124

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length143.0 ft (43.6 m)
Max Span70.9 ft (21.6 m)
Deck Width36.1 ft (11 m)
Deck Area479.6 sq m
Main Spans2
Year Built2005

Traffic

Avg Daily Traffic400 (2024)
Truck Traffic40%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 24 months
OwnerArmy
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure NumberDAPTRASIL00000C

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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